CN107567187B

CN107567187B - Elastic piece, functional assembly and mobile terminal

Info

Publication number: CN107567187B
Application number: CN201710778112.3A
Authority: CN
Inventors: 谷一平
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2017-08-31
Filing date: 2017-08-31
Publication date: 2020-01-14
Anticipated expiration: 2037-08-31
Also published as: CN107567187A

Abstract

The invention discloses an elastic piece which comprises a fixing part, a limiting part and an elastic contact part, wherein the fixing part is used for being fixed on a circuit board, the limiting part is connected with the fixing part and encloses a limiting space, the contact part comprises a butting section, a first end and a second end, the first end and the second end are respectively connected to two opposite sides of the butting section, the first end is connected with the fixing part, the second end is limited in the limiting space, the butting section is used for butting a to-be-contacted piece, and the elastic piece is used for electrically connecting the circuit board and the to-be-contacted piece. The elastic member has high reliability. The invention also discloses a functional component and a mobile terminal.

Description

Elastic piece, functional assembly and mobile terminal

Technical Field

The invention relates to the technical field of electronic equipment, in particular to an elastic piece, a functional assembly and a mobile terminal.

Background

At present, a functional module (such as a camera module) of a mobile phone is grounded through an elastic element, and in order to ensure high grounding reliability of the functional module, the elastic element is in close contact with the functional module, so that when the functional module is assembled or disassembled, a large extrusion force is easily formed on the elastic element, and the elastic element is deformed greatly to fail, thereby resulting in poor reliability of the elastic element.

Disclosure of Invention

The invention provides an elastic piece with high reliability, a functional assembly and a mobile terminal.

The embodiment of the invention adopts the following technical scheme:

on one hand, the elastic part comprises a fixing part, a limiting part and an elastic contact part, wherein the fixing part is used for being fixed on a circuit board, the limiting part is connected with the fixing part and encloses a limiting space, the contact part comprises a supporting section, and a first end and a second end which are respectively connected to two opposite sides of the supporting section, the first end is connected with the fixing part, the second end is limited in the limiting space, the supporting section is used for supporting a contact element to be contacted, and the elastic part is used for electrically connecting the circuit board with the contact element to be contacted.

On the other hand, the functional component comprises a circuit board, a functional device and the elastic element, wherein the elastic element is electrically connected with the grounding point of the circuit board, and the to-be-contacted element is sleeved on the outer side of the functional device or the shell of the functional device is the to-be-contacted element.

In another aspect, a mobile terminal is also provided, which includes the above functional components.

In the embodiment of the invention, the abutting section abuts against the to-be-contacted piece, and when the to-be-contacted piece is installed or disassembled, the frictional force or/and the extrusion force between the to-be-contacted piece and the abutting section can drive the abutting section to move along the disassembling and assembling direction of the to-be-contacted piece. Because the second end of the contact part is limited to move in the limit space, the displacement of the abutting section connected with the second end is limited, so that the contact part can be prevented from failing due to overlarge movement displacement and large deformation of the abutting section, the reliability of the elastic part is high, and the reliability of the functional component and the mobile terminal using the elastic part is high.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of functional components of the mobile terminal shown in fig. 1.

Fig. 3 is a perspective view of the functional assembly shown in fig. 2.

Fig. 4 is an exploded view of the structure shown in fig. 3.

Fig. 5 is a schematic structural view of an elastic member of the mobile terminal shown in fig. 1.

Fig. 6 is a schematic view of another angle of the elastic member shown in fig. 5.

Fig. 7 is a schematic view of the structure of fig. 6 taken along line a-a.

Fig. 8 is a schematic view of the structure of fig. 7 taken along B-B.

Fig. 9 is an enlarged schematic view of the structure at C in fig. 7.

Detailed Description

The technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Furthermore, the following description of the various embodiments refers to the accompanying drawings, which illustrate specific embodiments in which the invention may be practiced. Directional phrases used in this disclosure, such as, for example, "upper," "lower," "front," "rear," "left," "right," "inner," "outer," "side," and the like, refer only to the orientation of the appended drawings and are, therefore, used herein for better and clearer illustration and understanding of the invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "disposed at … …" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified. In the present specification, the term "step" is used to mean not only an independent step but also an independent step unless clearly distinguished from other steps, as long as the intended function of the step is achieved. In the present specification, the numerical range represented by "to" means a range including numerical values before and after "to" as a minimum value and a maximum value, respectively. In the drawings, elements having similar or identical structures are denoted by the same reference numerals.

Referring to fig. 1 to 4 together, an embodiment of the invention provides a mobile terminal 100. The mobile terminal 100 may be a mobile phone, a tablet computer, a notebook computer, or the like. The mobile terminal 100 includes functional components 300.

The functional assembly 300 includes a circuit board 1, a functional device 2, and an elastic member 3. The contact element 20 to be contacted is sleeved outside the functional device 2 or the shell of the functional device 2 is the contact element 20 to be contacted. The member to be contacted 20 is made of a conductive material, such as a metal conductive material. The elastic element 3 is electrically connected to a grounding point of the circuit board 1, the elastic element 3 abuts against the contact waiting element 20, so that the elastic element 3 is electrically connected to the circuit board 1 and the contact waiting element 20, and the contact waiting element 20 is grounded through the elastic element 3, thereby increasing the safety of the functional device 2.

The elastic member 3 includes a fixing portion 31, a limiting portion 32 and an elastic contact portion 33. The fixing portion 31 is used for fixing on the circuit board 1. The limiting part 32 is connected with the fixing part 31 and encloses a limiting space 320. The contact portion 33 includes a holding section 331 and a first end 332 and a second end 333 connected to two opposite sides of the holding section 331. The first end 332 is connected to the fixing portion 31. The second end 333 is limited in the limiting space 320, so that the second end 333 moves in the limiting space 320 under the action of external force. The abutting section 331 is used for abutting against the contact waiting member 20, and the elastic member 3 is used for electrically connecting the circuit board 1 and the contact waiting member 20. At this time, the to-be-contacted member 20 is electrically connected to the circuit board 1 sequentially through the abutting section 331, the first end 332 and the fixing portion 31.

In this embodiment, the abutting section 331 abuts against the to-be-contacted member 20, and when the to-be-contacted member 20 is mounted or dismounted, the friction force or/and the pressing force between the to-be-contacted member 20 and the abutting section 331 drives the abutting section 331 to move along the dismounting direction X of the to-be-contacted member 20. Since the second end 333 of the contact portion 33 is limited to move in the limiting space 320, the displacement of the abutting section 331 connected to the second end 333 is limited, so that the contact portion 33 can be prevented from failing due to the fact that the abutting section 331 moves excessively and deforms greatly, the reliability of the elastic member 3 is high, and the reliability of the functional component 300 and the mobile terminal 100 using the elastic member 3 is high.

The member to be contacted 20 is substantially in the shape of a cover or a ring like decorative ring, and is fitted around the periphery of the functional device 2 or forms a housing of the functional device 2. The functional device 2 may be a camera module, a USB (universal serial Bus) interface, a fingerprint module, or the like. As shown in fig. 1 to 4, the functional device 2 is a camera module, and the contact-waiting element 20 is a cover body that is sleeved outside the camera module. The camera module and the contact element 20 are installed along the dismounting direction X of the contact element 20, the friction force or/and the pressing force between the contact element 20 and the abutting section 331 drives the abutting section 331 to move along the dismounting direction X of the contact element 20, and because the second end 333 is limited to move in the limiting space 320, when the second end 333 is driven by the abutting section 331 to abut against the wall surface of the limiting space 320, the limiting portion 32 prevents the second end 333 and the abutting section 331 connected with the second end 333 from moving continuously, so that the abutting section 331 stays or moves to a direction different from the dismounting direction X of the contact element 20. When the abutting section 331 stays, the contact piece 20 and the abutting section 331 slide and rub, and the contact piece 20 continues to be installed to a predetermined position. When the abutting section 331 moves in a direction different from the attaching and detaching direction X of the to-be-contacted member 20, for example, in the direction Y away from the to-be-contacted member 20, the frictional force between the abutting section 331 and the to-be-contacted member 20 is reduced, and the to-be-contacted member 20 can be quickly mounted to a predetermined position with a small resistance. The contact portion 33 may be made of an elastic material as a whole to have elasticity, or may be made of an elastic material as a part thereof to have elasticity.

Optionally, the circuit board 1 may be a main board of the mobile terminal 100. The mobile terminal 100 also includes a battery 4. The battery

Referring to fig. 4 to 9, as an alternative embodiment, the position-limiting portion 32 includes two position-limiting arms 321 disposed oppositely. The two stopper arms 321 are spaced apart from each other. The two stopper arms 321 surround and form the stopper space 320. The supporting section 331 includes a supporting end 334 and a first connecting section 335 connected between the supporting end 334 and the second end 333, and the first connecting section 335 extends into the limiting space 320 from between the two limiting arms 321. The abutting end 334 is used for abutting against the contact member to be contacted 20. The two limiting arms 321 and the fixing portion 31 may be substantially box-shaped. An opening 322 is formed between the two limiting arms 321, which connects the limiting space 320 to the outside of the limiting portion 32, and the first connecting section 335 extends into the limiting space 320 from the opening 322. The opening 322 extends along the mounting and dismounting direction X of the to-be-contacted member 20, so that the first connecting section 335 can move along the mounting and dismounting direction X of the to-be-contacted member 20.

Optionally, the two limiting arms 321 may be symmetrically disposed, so as to reduce the processing difficulty and the processing cost of the elastic element 3.

Optionally, each of the limiting arms 321 includes a supporting section 323 and a limiting section 324 connected to the supporting section 323, and the supporting section 323 is connected to the fixing portion 31. The supporting sections 323 of the two limiting arms 321 are disposed oppositely, and the limiting sections 324 of the two limiting arms 321 are folded toward each other and located at two opposite sides of the first connecting section 335. At this time, the stopper sections 324 of the two stopper arms 321 are folded toward each other to form the opening 322 between the ends of the stopper sections 324.

Optionally, in a direction Z perpendicular to the extending direction of the first connecting section 335, the width W1 of the second end 333 is greater than the gap width W2 between the limiting sections 324 of the two limiting arms 321, so as to prevent the second end 333 from escaping from the limiting space 320. The gap width W2 between the two limiting sections 324 of the two limiting arms 321 is the width of the opening 322, the width W1 of the second end 333 is larger than the width of the opening 322, so that the second end 333 can be limited in the limiting space 320, and the first connecting section 335 is prevented from being separated from the limiting space 320 with the second end 333 in the moving process. The width of the first connecting section 335 is also smaller than the width W1 of the second end 333, and the first connecting section 335 and the second end 333 are substantially T-shaped.

Optionally, the limiting section 324 includes a first limiting plate 3241, and a second limiting plate 3242 and a third limiting plate 3243 connected to two opposite sides of the first limiting plate 3241. The first limiting plate 3241 is connected to the supporting section 323. A first included angle α 1 is formed between the second limiting plate 3242 and the first limiting plate 3241, and the second end 333 is limited by the second limiting plate 3242 in a direction perpendicular to the second limiting plate 3242. The second limiting plate 3242 is bent in a direction away from the abutting section 331 with respect to the first limiting plate 3241. A second included angle α 2 is formed between the third limiting plate 3243 and the first limiting plate 3241, and the third limiting plate 3243 limits the second end 333 in a direction perpendicular to the third limiting plate 3243. The third limiting plate 3243 is bent in a direction away from the abutting section 331 with respect to the first limiting plate 3241.

Optionally, the first limiting plate 3241 extends substantially along the mounting and dismounting direction X of the to-be-contacted member 20. The second limiting plate 3242 is away from the fixing portion 31 relative to the first limiting plate 3241, and the third limiting plate 3243 is close to the fixing portion 31 relative to the first limiting plate 3241. The second included angle α 2 is greater than or equal to the first included angle α 1. The first included angle α 1 is equal to or greater than 75 ° and equal to or less than 135 °, for example, 75 °, 90 °, 105 °, 120 °, 135 °, and the like. The second included angle α 2 is greater than or equal to 90 ° and less than or equal to 165 °, for example, 90 °, 105 °, 120 °, 135 °, 150 °, 165 °, and the like. Of course, in other embodiments, the second included angle α 2 may be smaller than the first included angle α 1.

Optionally, the first limiting plate 3241, the second limiting plate 3242 and the third limiting plate 3243 are integrally formed. The second stopper plate 3242 and the third stopper plate 3243 may be formed by bending a peripheral portion of the first stopper plate 3241.

Optionally, a third included angle α 3 is formed between the first limiting plate 3241 and the supporting section 323, so that the first limiting plate 3241 and the supporting section 323 can limit the second end 333 in different directions. The third included angle α 3 is 60 ° or more and 120 ° or less, for example, 90 °. The limiting section 324 further includes a connection plate 3244 connected between the supporting section 323 and the first limiting plate 3241. The connecting plate 3244 may be substantially arc-shaped to smoothly transition the supporting section 323 and the first limiting plate 3241.

Optionally, the position-limiting part 32 further comprises a supporting arm 325, and the supporting arm 325 is connected between the two position-limiting arms 321. The support arm 325 can increase the firmness of the stopper portion 32. Meanwhile, the support arm 325 may also support other components within the mobile terminal 100.

Referring to fig. 4 to 8, as an alternative embodiment, the fixing portion 31 includes a body 311, the body 311 has a first side 3111 and a second side 3112 opposite to each other, and the two limiting arms 321 are respectively connected to the first side 3111 and the second side 3112. The body 311 may be substantially plate-shaped, and when the body 311 is fixed on the circuit board 1, the body 311 is substantially attached to the positioning surface 11 of the circuit board 1. The two retaining arms 321 can be substantially perpendicular to the body 311.

Optionally, the fixing portion 31 further includes a positioning block 312, the positioning block 312 is connected to the body 311 and located on one side of the body 311 away from the two limiting arms 321, and the positioning block 312 is used for positioning the body 311 and the circuit board 1. The circuit board 1 is provided with positioning holes or positioning grooves 12, and the positioning blocks 312 extend into the corresponding positioning holes or positioning grooves 12 to realize positioning. In one embodiment, the positioning block 312 is in an interference fit with the circuit board 1, so as to fix the fixing portion 31 on the circuit board 1. In another embodiment, the fixing portion 31 may be fixed on the circuit board 1 by means of fastener connection or soldering.

Optionally, the body 311 further has a third side 3113 connected between the first side 3111 and the second side 3112, and the first end 332 is connected to the third side 3113. The first end 332 is spaced apart from the positioning block 312. The contact portion 33, the stopper portion 32, and the fixing portion 31 are integrally formed. The elastic member 3 may be formed by bending a single plate, the position-limiting portion 32 is bent at the first side 3111 and the second side 3112 of the body 311, and the contact portion 33 is bent at the third side 3113 of the body 311.

The third edge 3113 and the first end 332 are in transition of an arc 336, and the arc 336 is provided with a first reinforcing rib 337. The first reinforcing bead 337 serves to reinforce the coupling strength and the structural strength between the contact portion 33 and the fixing portion 31 to increase the maximum elastic force and the amount of elastic deformation allowed by the elastic member 3. The first reinforcing bead 337 may be formed by punching.

Optionally, the circuit board 1 is further provided with a recessed area 13, and the recessed area 13 penetrates through the circuit board 1 in the thickness direction of the circuit board 1. When the fixing portion 31 is installed on the circuit board 1, the first end 332 is located in the recessed area 13, and when the elastic member 3 deforms, the wall surface of the recessed area 13 can limit the first end 332, so that the elastic member 3 is prevented from losing efficacy due to excessive deformation.

Referring to fig. 5 to fig. 9, as an alternative embodiment, the supporting section 331 further includes a second connecting section 338 connected between the supporting end 334 and the first end 332, and the second connecting section 338 is disposed in a curved shape. The second connecting section 338 is arranged in a curved manner, allowing a larger amount of deformation without damaging the elastic element 3. The second connecting segment 338 may be substantially U-shaped, V-shaped, or arc-shaped.

The abutting end 334 protrudes in a direction away from the fixing portion 31 to smoothly abut against the to-be-contacted piece 20. On a plane perpendicular to the dismounting direction X of the to-be-contacted member 20, the first connecting section 335 and the second connecting section 338 are both located between the abutting end 334 and the fixing portion 31.

Optionally, the second limiting plate 3242 is far from the second connecting segment 338 relative to the first limiting plate 3241, and the third limiting plate 3243 is close to the second connecting segment 338 relative to the first limiting plate 3241. The second included angle α 2 is greater than or equal to the first included angle α 1, so that the second end 333 is displaced by a relatively large amount in a direction approaching the second connection segment 338.

Optionally, a second reinforcing rib 339 is disposed on an outer side of the abutting end 334 for abutting against the to-be-contacted member 20. The second stiffener 339 abuts against the contact-waiting member 20. The area of the second reinforcing rib 339 abutting against the to-be-contacted member 20 is small, so that the friction force between the abutting end 334 and the to-be-contacted member 20 can be reduced, and the to-be-contacted member 20 is convenient to mount and dismount. Meanwhile, the second reinforcing rib 339 can increase the strength of the abutting end 334 so as to increase the maximum elastic force and the maximum elastic deformation amount allowed by the elastic element 3. The second reinforcing bead 339 may be formed by punching.

Optionally, the abutting end 334 is U-shaped, V-shaped or arc-shaped. The abutting end 334 abuts against the bottom of the contact-waiting member 20 for smooth transition, so as to better contact the contact-waiting member 20 without damaging the contact-waiting member 20.

The above embodiments of the present invention are described in detail, and the principle and the implementation of the present invention are explained by applying specific embodiments, and the above description of the embodiments is only used to help understanding the method of the present invention and the core idea thereof; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims

1. An elastic part is characterized by comprising a fixing part, a limiting part and an elastic contact part, wherein the fixing part is used for being fixed on a circuit board, the limiting part is connected with the fixing part, the contact part comprises a supporting section, a first end and a second end, the first end and the second end are respectively connected to two opposite sides of the supporting section, the first end is connected with the fixing part, the second end is limited in the limiting space, the supporting section is used for supporting a to-be-contacted element, and the elastic part is used for electrically connecting the circuit board with the to-be-contacted element; when the second end is driven by the abutting section to abut against the wall surface of the limiting space, the limiting part prevents the second end and the abutting section connected with the second end from continuously moving; the limiting part comprises two limiting arms which are oppositely arranged, the two limiting arms surround to form the limiting space, the abutting section comprises an abutting end and a first connecting section connected between the abutting end and the second end, and the first connecting section extends into the limiting space from the position between the two limiting arms.

2. The spring as claimed in claim 1, wherein each of the position-limiting arms includes a supporting portion and a position-limiting portion connected to the supporting portion, the supporting portion is connected to the fixing portion, the supporting portions of the two position-limiting arms are oppositely disposed, and the position-limiting portions of the two position-limiting arms are folded toward each other and are respectively located at two opposite sides of the first connecting portion.

3. The spring of claim 2, wherein the second end has a width greater than a width of a gap between the stopper sections of the two stopper arms in a direction perpendicular to an extending direction of the first connecting section to prevent the second end from being separated from the stopper space.

4. The elastic member according to claim 2, wherein the limiting section comprises a first limiting plate, and a second limiting plate and a third limiting plate connected to opposite sides of the first limiting plate, the first limiting plate is connected to the supporting section, a first included angle is formed between the second limiting plate and the first limiting plate, and a second included angle is formed between the third limiting plate and the first limiting plate.

5. The spring of claim 4, wherein the first retainer plate forms a third angle with the support segment, and wherein the retainer segment further comprises a connecting plate connected between the support segment and the first retainer plate.

6. The spring of claim 1, wherein the retainer portion further comprises a support arm connected between the two retainer arms.

7. The spring of any of claims 1-6, wherein the retainer portion includes a body having first and second opposing sides, the two retainer arms respectively connecting the first and second sides.

8. The spring of claim 7, wherein the fixing portion further comprises a positioning block connected to the body and located on a side of the body away from the two positioning arms, the positioning block being used for positioning the body and the circuit board.

9. The spring of claim 7, wherein the body further has a third edge connected between the first edge and the second edge, the first end being connected to the third edge.

10. The spring of claim 9, wherein the third edge transitions in a circular arc with the first end and the circular arc has a first rib disposed thereon.

11. The elastic element according to any one of claims 1 to 6, wherein a second reinforcing rib is arranged on the outer side of the abutting end for abutting against the element to be contacted.

12. The spring of claim 11, wherein the retaining end is U-shaped, V-shaped, or rounded.

13. The elastic member according to any one of claims 1 to 6, wherein the abutting section further comprises a second connecting section connected between the abutting end and the first end, and the second connecting section is disposed in a bent manner.

14. A functional assembly, comprising a circuit board, a functional device and the elastic member as claimed in any one of claims 1 to 13, wherein the elastic member is electrically connected to a grounding point of the circuit board, and a housing of the functional device or the functional device is sleeved with a contact-waiting member.

15. A mobile terminal characterized by comprising the functional components of claim 14.